If the issue ends up being similar to what I initially described, then yes this is a bug in the PI Buffer Subsystem. However, given your statement that following a restart of pibufss the errors continue to flow, I am not positive that we can classify it under that. Given the details on this work item, the PI Buffer Subsystem should be re-registering itself and its cached point list with the PI Data Archive on startup, which would remove such an unresolved point.

Can you run a command on the interface node? In a command prompt from the %pihome%\bin directory:

pibufss -sp > pibufss_sp.txt

This will save the output to a text file pibufss_sp.txt in the \bin folder. Take a look and let me know if you see any tags listed at the bottom as "Unresolved Points"

It appears that we have an unresolved point cached in our PI Buffer Subsystem. What we'll need to do is perform a pibufss reset on the buffer registration, which will lift the buffer's hold on all tags, and force it to recreate it's list.

1) On the PI Data Archive node, open a command prompt and navigate to the %PISERVER%\adm directory.

2) Run the command: piartool -bfs

We will locate the appropriate buffer registration, and make note of it's 'RegistrationID' value

In my example, I am looking for a buffer registration from server ARNOLDPALMER, and I find it has a RegID=15

3) From the same %PISERVER%\adm directory, run the command: piartool -bfs <RegID from step 2> -reset

Example: piartool -bfs 15 -reset

You should now see the PointCount attribute go to 0, meaning that all tags in the buffer's cache have been cleared.

Can you post some examples of where you see the message, and the message itself? Context is probably important to understand why you are getting this error. Also, 1.1.0.6 is not a release version of PI Buffer Subsystem - did you perhaps get this version from something else? If you are running PI Buffer Subsystem, you can get the version from the control panel, or you can run the command "pibufss -v" to get the version directly from the executable file.